September Weather in Ballintoy Harbour, United Kingdom

Last updated: March 17, 2025

Experience the charming yet unpredictable September weather of Ballintoy Harbour in the United Kingdom. During this month, temperatures typically range from a pleasant 17°C (64°F) at their peak to a cooler 9°C (49°F) at night, with an average of 13°C (56°F)—making it ideal for adventurous outdoor activities. However, be prepared for the occasional drizzle, as rainfall totals around 112 mm (4.4 in) over approximately 19 days, resulting in a high humidity level of 88%. Whether you're exploring the rugged coastline or enjoying local attractions, pack your layers and a reliable raincoat to make the most of this enchanting destination.

September Temperature in Ballintoy Harbour

As September unfolds at Ballintoy Harbour, the temperatures begin to show the first hints of autumn, with a minimum of 9°C (49°F) and an average of 13°C (56°F), peaking at 17°C (64°F). This represents a gentle transition from the warmth of summer, evident as daytime highs start to taper off compared to the months prior. While the waters remain inviting, the refreshing coolness in the air invites cozy attire for those enjoying the stunning coastal views. The shift from the 14°C (57°F) average in August illustrates a noticeable drop, yet the lingering warmth allows for outdoor activities, blending the best of both seasons. Visitors can relish the crisp sea breeze, making September a delightful time to experience the beauty of this picturesque harbor.

September Weather in Ballintoy Harbour: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ballintoy Harbour, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454444464953565756534946
Data source: Temperature data for Ballintoy Harbour generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ballintoy Harbour

September in Ballintoy Harbour sees a noteworthy precipitation of 112 mm (4.4 in), continuing the trend of significant rainfall that characterizes the late summer months. With 19 days of rain, September maintains the high frequency of wet days experienced in August, where 132 mm (5.2 in) fell over 19 days. This pattern suggests that autumn is setting in, bringing with it increased moisture and a transition towards the typically wetter months ahead. Notably, the precipitation amounts are higher than the preceding spring and summer months, hinting at a gradual shift as the region braces for the more intense downpours of autumn and winter, exemplified by the spike in October's expected 160 mm (6.3 in). Thus, September stands as a bridge between the summer's lingering showers and the forthcoming autumnal deluge.

September Precipitation Trends in Ballintoy Harbour

The chart displays monthly precipitation patterns in Ballintoy Harbour, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec121138106477098105132112160167166
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Ballintoy Harbour

As summer transitions into autumn, September brings a notable rise in humidity at Ballintoy Harbour, reaching 88%—the highest point observed for the month. Following the warmer months of July and August, which both maintain consistent humidity levels of 86%, September's increase signifies the onset of damp weather patterns typical of the fall season. This uptick continues a trend of elevated humidity levels experienced throughout the year, peaking in the cooler months with October and November following closely at 89% and 90%, respectively. The overall pattern reflects a steady yet gradual shift toward a more humid climate as the year progresses, making Ballintoy an intriguing spot for those who appreciate the dramatic interplay of coastal weather.

September Average Humidity in Ballintoy Harbour

This chart illustrates the average monthly humidity levels in Ballintoy Harbour, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ballintoy Harbour

In September, Ballintoy Harbour experiences a moderate UV Index of 5, signaling a shift from the high levels earlier in the summer months. With a recommended burn time of 30 minutes, it’s essential for visitors to strike a balance between enjoying the scenic beauty and protecting their skin. As the days begin to shorten and the sun's rays mellow, the UV exposure remains significant, making it crucial to maintain sun safety practices. This trend illustrates the gradual decline in UV levels from the peak summer months, but even in September, vigilance is key for beachgoers and explorers. For more detailed information, check out the Ballintoy Harbour UV Index.

Maximum UV Index Levels in Ballintoy Harbour for September

The chart shows the monthly maximum UV Index (UVI) for Ballintoy Harbour in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec123568865311
Data source: Ballintoy Harbour September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Ballintoy Harbour

As summer transitions into autumn, September in Ballintoy Harbour continues to bask in a generous 289 hours of sunshine, although it marks a clear decline from the preceding vibrant months of July and August, which boasted 410 and 361 hours respectively. This gentle dip is reflective of the seasonal shift, yet it still outshines the dreariness of the winter months like January and December, which struggle to surpass 100 hours. The sunshine hours remain a comforting reminder of the warmer days, blending beautifully with the rugged coastline and inviting shades of nature, making September a perfect time for both reflection and exploration before the chill of October takes hold.

Monthly Sunshine Duration in Ballintoy Harbour: September Highlighted

The September sunshine duration represents the total number of hours Ballintoy Harbour experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec73h148h211h325h408h396h410h361h289h226h118h83h
Data source: Ballintoy Harbour September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ballintoy Harbour During September

As September arrives in Ballintoy Harbour, the likelihood of enjoying sunny weather hovers at 23%, a slight dip from the summer months. This reflects a seasonal transition, with warmer and sunnier days gradually giving way to the cool embrace of autumn. Despite this reduction, September still offers a moderately favorable chance of sun compared to the colder months ahead, making it a charming time for visitors who seek the rugged coastline under clearer skies. Overall, while the sunshine may not be guaranteed, the beauty of the area remains compelling, showcasing the stunning landscapes that make Ballintoy a cherished destination year-round.

Percentage of Sunny Days in September in Ballintoy Harbour

The chart illustrates the percentage of sunny days in Ballintoy Harbour throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ballintoy Harbour experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec24%27%17%46%38%26%28%21%23%17%18%14%
Data source: Ballintoy Harbour September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ballintoy Harbour in September

As the summer days wane, September in Ballintoy Harbour reveals a gentle transition in daylight duration, offering approximately 12 hours of light each day. This marks a notable decrease from the peak of 17 hours in June, as the days gradually shorten with the approach of autumn. The pleasant warmth of early fall continues to linger, making September a delightful time to explore the stunning coastal views. Following the vibrant months of May and June, which bask in nearly half a day of sunlight, the subsequent months compact the daylight experience, foreshadowing the deeper shadows of October's 10 hours. This rhythmic ebb and flow of daylight not only enhances the enchanting landscape of Ballintoy but also invites adventurers to soak in the last golden hours of the changing season.

Average Daylight Hours in Ballintoy Harbour for September

The chart illustrates the variation in daylight duration in Ballintoy Harbour throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 48m9h 39m11h 53m14h 11m16h 13m17h 18m16h 43m14h 52m12h 39m10h 23m8h 20m7h 12m
Data source: Ballintoy Harbour daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ballintoy Harbour

As the winds of September sweep through Ballintoy Harbour, a gentle breeze emerges, showcasing an average wind speed of 5.5 m/s (12 mph). This month serves as a turning point in the seasonal wind cycle, following the calmer summer months of July and August, where average speeds dipped to their lowest. In contrast to the autumnal months ahead, which see an increase in wind intensity, September's winds offer a refreshing prelude to the gales of October and November, gradually ramping up from the summer's lull. This transitional period not only enhances the coastal charm of Ballintoy but also signals the vibrant changes that herald the approach of fall.

Average September Wind Speed in Ballintoy Harbour

The chart displays monthly wind speed patterns in Ballintoy Harbour, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec8.010.57.65.96.45.54.04.75.5 m/s7.99.68.5
Data source: Ballintoy Harbour September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ballintoy Harbour Compares to Other Months

The weather in Ballintoy Harbour changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Ballintoy Harbour and find detailed weather information for every month.

In September, temperatures range from a chilly 9°C (49°F) to a mild 17°C (64°F), with an average of 13°C (56°F). Precipitation levels are significant, with 112 mm (4.4 in) falling over approximately 19 days, and humidity remains high at 88%. In contrast, January presents a colder climate, where temperatures drop to a minimum of 2°C (36°F) and reach a maximum of 13°C (56°F), averaging around 7°C (45°F). The month's precipitation is slightly higher at 121 mm (4.7 in) over 17 days, with a humidity level of 87%. This indicates that both months are quite wet, but January is considerably cooler than September. For more details on January weather, visit Ballintoy Harbour weather in January.

In September, the weather tends to be milder with average temperatures ranging from 9°C (49°F) to a pleasant 17°C (64°F), accompanied by high humidity at 88%. This month experiences significant rainfall, totaling 112 mm (4.4 in) over approximately 19 days. In contrast, February is colder, with temperatures fluctuating between 1°C (34°F) and 12°C (54°F). Despite slightly less humidity at 86%, February sees more rainfall, measuring 138 mm (5.4 in) across 18 days. For those interested in specific conditions during this winter month, more detailed information can be found at Ballintoy Harbour weather in February.

September and March present distinct weather patterns, reflecting the transition from late summer to early spring. In September, temperatures are generally milder, with an average of 13°C (56°F) and maximums reaching 17°C (64°F), accompanied by higher humidity levels at 88%. The month sees considerable precipitation, totaling 112 mm (4.4 in) over 19 days, contributing to a damp, yet relatively warm environment.

In contrast, March experiences cooler temperatures, averaging around 7°C (44°F) with maximums of 12°C (54°F) and even dipping to -1°C (31°F) at night. Although precipitation is slightly lower at 106 mm (4.2 in) over 17 days, the humidity remains comparable at 86%. For a more detailed look at the weather during this time, you can check out Ballintoy Harbour weather in March. Overall, September offers warmer and more humid conditions, while March is marked by chillier temperatures and the lingering remnants of winter.

The weather in September tends to be milder and wetter compared to April. In September, temperatures average around 13°C (56°F), with a minimum of 9°C (49°F) and a maximum of 17°C (64°F), whereas April sees cooler temperatures, averaging 8°C (46°F) with a minimum of 2°C (37°F) and a maximum of 13°C (55°F). Additionally, September experiences significantly more precipitation, with 112 mm (4.4 in) over 19 days, compared to April's 47 mm (1.9 in) across just 10 days. While both months have similarly high humidity levels, September's humidity averages at 88%, slightly higher than April's 85%. For a detailed look at April weather specifics, visit Ballintoy Harbour weather in April.

September tends to be milder than May, featuring average temperatures that range from 9°C (49°F) to 17°C (64°F), while May offers cooler averages of 5°C (41°F) to 15°C (60°F). Additionally, September experiences significantly more precipitation, with 112 mm (4.4 in) over 19 days compared to May's 69 mm (2.7 in) across just 11 days. Despite this, both months have relatively high humidity, with September at 88% and May slightly lower at 82%. For a more detailed look at May's climate specifically, you can visit Ballintoy Harbour weather in May.

In comparing the weather of September and June, September tends to be slightly warmer, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 17°C (64°F), whereas June sees a slightly lower average, ranging from a minimum of 8°C (47°F) to a maximum of 16°C (62°F). Precipitation is more frequent in September, with rainfall occurring on 19 days and totaling 112 mm (4.4 in), compared to June's 16 days of rain and lower total precipitation of 98 mm (3.8 in). Additionally, September has a higher humidity level at 88%, compared to June's 84%. For a more detailed look, you can check out the weather specifics at Ballintoy Harbour weather in June.

In comparing the weather of September to that of July, we notice some interesting differences. September experiences slightly cooler temperatures, with a minimum of 9°C (49°F) and a maximum of 17°C (64°F), while July is a bit warmer with a minimum of 11°C (52°F) and a maximum of 19°C (66°F). Rainfall is similar, with September receiving 112 mm (4.4 in) across 19 days compared to July's 105 mm (4.1 in) over 16 days, indicating that September tends to be a wetter month. Additionally, the humidity is slightly higher in September at 88%, compared to July's 86%. For more detailed information about July's weather, you can check Ballintoy Harbour weather in July.

In comparing the weather between August and September, we see a slight drop in temperatures as September features a minimum of 9°C (49°F), an average of 13°C (56°F), and a maximum of 17°C (64°F), while August has a minimum of 10°C (51°F), an average of 14°C (57°F), and a maximum of 18°C (64°F). Additionally, September experiences more rain with 112 mm (4.4 in) of precipitation over 19 days, compared to August’s 132 mm (5.2 in) also over 19 days. Humidity is a bit higher in September at 88%, compared to August's 86%. For more specific insights, you can check the Ballintoy Harbour weather in August.

September and October exhibit noticeable differences in weather patterns. In September, temperatures range from a minimum of 9°C (49°F) to a maximum of 17°C (64°F), with an average of 13°C (56°F). The month sees approximately 112 mm (4.4 in) of precipitation over 19 days, with humidity levels at 88%. In contrast, October experiences slightly cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 16°C (62°F), averaging 12°C (53°F). Precipitation increases significantly to 160 mm (6.3 in) over 24 days, and humidity rises slightly to 89%. For more details on specific weather conditions during this time, you can check Ballintoy Harbour weather in October.

In comparing the weather between September and November, September tends to be slightly warmer, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 17°C (64°F). In contrast, November experiences cooler temperatures, averaging between 4°C (40°F) and 14°C (58°F). September also sees less precipitation, with 112 mm (4.4 in) over 19 days, while November records a higher rainfall of 167 mm (6.6 in) on 23 days. Additionally, humidity levels remain quite high in both months, but November is marginally more humid at 90%. For a detailed look at November's weather, check out Ballintoy Harbour weather in November.

In September, temperatures in Ballintoy range from a minimum of 9°C (49°F) to a maximum of 17°C (64°F), with an average of 13°C (56°F). The month sees significant precipitation, totaling 112 mm (4.4 in) over 19 days, coupled with high humidity at 88%. In contrast, December experiences cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 12°C (54°F), averaging around 8°C (47°F). Precipitation increases to 166 mm (6.5 in) over 23 days, while humidity remains slightly lower at 86%. The drop in temperature and increase in rainfall highlight the transition into winter. For more detailed insights into how the weather specifically impacts December conditions, you can check Ballintoy Harbour weather in December.

Compare Ballintoy Harbour's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ballintoy Harbour

September at Ballintoy Harbour presents a striking transition into autumn, characterized by its cooler temperatures and increased rainfall compared to the summer months. With an average temperature around 13°C (56°F) and a significant 112 mm (4.4 in) of precipitation spread across nearly two-thirds of the month, visitors will find themselves enveloped in a notably humid atmosphere, averaging 88%. This blend of cool breezes and frequent showers sets the stage for a serene yet vibrant landscape, making it a unique time to experience the beauty of Ballintoy. For a deeper dive into seasonal changes, check out our detailed page on Ballintoy Harbour Climate.